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2 years ago

Help pls its a test t t t t t t

Mathematics

2 answers:

andrew-mc [135]2 years ago

8 0

Answer: C

Step-by-step explanation: Hope this help :D

Ray Of Light [21]2 years ago

6 0

The answer is c because it is c

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Identify the restrictions on the variable

34kurt

Answer:

x ≠ -4

Step-by-step explanation:

Division by zero is not defined, so x cannot = -4.

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2 years ago

You have just bought a new television and it has an aspect ratio of 16:9. The screen on the television is 65 inches. What is the

dem82 [27]

Answer:

Width of T.V. is 21.94 inches Height is 39 inches and area is 855.66 square inch.

Step-by-step explanation:

When we buy an electronic item like T.V or Blue Ray aspect ratio is the term which is used by the salesmen or technicians. Aspect ratio is actually the ratio of length and breadth of the screen of a device or ration of width and height.

In this question aspect ratio of television is given as 16:9

This can be written as $\frac{W}{H}=\frac{16}{9}$ or $W=\frac{16}{9} H$

Screen of the T.V. is 65 inch which is the diagonal length of the screen.

We know from pythagoras theorem in a right angle triangle

$(diagonal)^{2}=(base)^2+(height)^2$

$(65)^2=(Base)^2+(height)^2$

$(65)^2= W^2+H^2 = (\frac{16}{9}H)^2+H^2$

$(65)= \sqrt{\frac{16}{9}H^2+H^2}\\ 65=H\sqrt{\frac{16}{9}+1}\\ 65=H\sqrt{\frac{25}{9}}\\ 65=\frac{5}{3}H\\ H=39 inches$

Now height of the T.V.will be

$\frac{W}{H}=\frac{16}{9} \\\\\frac{H}{W}=\frac{9}{16}\\ H=\frac{9}{16}W = (\frac{9}{16})39= 21.94 Inches$

now area of the T.V.=W×H=39×21.94=855.66 square inch

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2 years ago

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654 divided by what number equals 218

Airida [17]

The answer is 142572. You have to multiply 654 and 218. To check our answer just divide 654 by 142572

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Which statement best describes f(6) = 12?

Sergio039 [100]

Answer:

When the input is 6, the output must be 12.

Step-by-step explanation:

f(6) = 12

The input to the function is x which is 6 and the output is what f(6) equals which is 12

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$50

Step-by-step explanation:

If he pays $10 every month, and he pays for 5 months, it would be 10 x 5, which means he would be $50 in debt.

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2 years ago